Combine the oil, shallow, ginger, and garlic in a large pot over low heat. Cook for 5 minutes, or until fragrant. Add the cumin, turmeric, and thyme. Cook for another 5 minutes, or until fragrant.
Add the root vegetables, stir to coat in the spices and oil, and cook on medium heat for about 5 minutes to soften.
Add the vegetable broth, rice, and 2 cups of water. Bring to a boil, then reduce to a simmer. Add the nettles and reishi (if using), salt, and pepper. Lastly, add the greens, give everything a good stir, cover the pot, and let simmer for 30 minutes or until the root vegetables are very soft.
Remove from heat and divine into bowls. Garnish with any toppings or additional spices, as desired. Store in an airtight container in the refrigerator for 3 days, or in the freezer for up to 3 months.